This is a popular item that comes pre- assembled. The four legs inside the screen are pre-welded to the base. The lid is then bolted to the legs at the factory. You just take it out of the box and it's ready for you to install on your chimney.

The Guardian Cap attaches to both reline pipe and solid pack, class-A chimneys by sliding inside with a tight friction fit. That's all there is to it! Why pay someone $50 to install it when you can do it yourself in minutes?

Comes with a 6" high screen and 17" diameter lid. Has a 5" high base. Comes with a lifetime warranty.